/Engine/Source/Runtime/Engine/Public/Net/VoiceConfig.h
This is used by the VoiceEngineImpl to notify this VOIPTalker what the voice audio component's current level is. This should not be called outside of the voice engine.
void OnAudioComponentEnvelopeValue ( const [UAudioComponent](API\Runtime\Engine\Components\UAudioComponent) * InAudioComponent, const float EnvelopeValue )